floyd

说明：  正交优化代码 两条相交线的优化matlab程序 (the code of youhua )

simulink basic example of second order differential equation

OFDM的仿真程序，经过瑞利多径的仿真。其中子载波数为4.(OFDM simulation procedure, after the simulation of multipath Rayleigh. Subcarriers of which the number of 4.)

龙格库塔法matlab仿真代码。适于学习控制的朋友在进行matlab仿真时学习方法本质。(Runge-Kutta method matlab simulation code. Learning Control for friends during the matlab simulation method when the nature of learning.)

matlab具体应用，在数字图像处理中常会用到的具体实例，资料中负有源码。(matlab specific applications, the frequently used in digital image processing specific example, the data source in the responsibility.)

说明：  四旋翼无人机是一种可以被遥控也可以在无人为控制的状态下执行预定任务的飞行器，与传统直升机相比四旋翼飞行器的机械结构简单，且具有高精度，灵活精度以及较低成本的特点，被广泛用于军事侦察，农艺播撒、快递派送、摄影工作等领域。四旋翼飞行器自身具有欠驱动、多变量、非线性等特性，在外界的噪声干扰情况下，增加了四旋翼无人机的不稳定以及控制系统的设计难度。所以对四旋翼飞行器的位姿控制的研究，可以开拓科研人员对控制算法以及滤波算法的认知，具有重要的研究意义。(Four-rotor UAV is a kind of aircraft that can be controlled remotely or perform scheduled tasks without human control. Compared with traditional helicopters, the Four-rotor UAV has simple mechanical structure, high precision, flexible precision and low cost. It is widely used in military reconnaissance, agricultural broadcast, express delivery, photography and other fields. Four-rotor UAV has the characteristics of under-actuation, multi-variable and non-linearity. Under the circumstance of external noise, the instability of Four-rotor UAV and the difficulty of control system design are increased. Therefore, the research on attitude control of Four-rotor aircraft can broaden the knowledge of control algorithm and filtering algorithm for researchers, and has important research significance.)

The solution of the book "Engineering Electromagnetics"（美）william H.Hayt,jr.(2001)著，第六版答案，网上很难找的，很有价值(The solution of the book "Engineering Elec tromagnetics "(U.S.) william H. Hayt. jr. (2001) to, the sixth edition of the answer, it is very difficult to find online, valuable)

GUI系统进行小波变换，能够将图像进行适当的压缩。(Wavelet transform GUI system, an image can be appropriately compressed.)

用pisar方法估计功率谱，并估计信号频率和峰值(Music method estimates the power spectrum, and estimate the signal frequency and peak)

internally keep track of Call states to maintain information for Call Waiting and 3Way for CDMA instance of Phone App.